Reinforcing-frame for concrete structures.



, G. M. GRAHAM.

REINPORGING FRAME FOB. CONCRETE STRUCTURES.

A-PTLIGATION FILED DEOJO, 1907.

E 938,661. Patented NW2, 1909.

3 SHEETS-SHEET 1.

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G. M. GRAHAM.

REINFORCING FRAME FOR CONCRETE STRUCTURES.

APPLICATION FILED DEC.10,1907.

9a l Mm w lm 7 .z NH GU/ j .am u v .M 1 j E P G. M. GRAHAM.

lREUTPORGING FRAME FOR CONCRETE STRUCTURES.

APPLIUATION FILED 1330.10, 1907.

938,661 Patented N0v.2,1909.

3 SHEETS-SHEET 3.

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To all whom 'it may concern:

Be it known that I, GEORGE M. GRAHAM, a citizen of the United States ofAmerica, and a resident of Chicago, in the county of Cookv and State ofIllinois, have invented certain new and useful Improvements inReinforcing-Frames for Concrete Structures', of which the following is aspecification.

This invention relates to thatjclass of reinforced concrete structuresin which the skeleton reinforcing 'frame is provided with skeletoncenters formed by serles of links, of an elongated hoop type, arrangedin separated and crossed relation u on the mar inal members of theskeleton rame. An `the present improvement has for its object to providea simple and elicient method by which an expeditious and economicalerection of the skeleton reinforcing frame of a concrete structure canbe attained, all as will hereinafter more fully appear. y

In the accompanying drawings illustrative of the present invention:Figure 1, is a horizontal section of a portion of the skeletonreinforcing frame of a concrete build.- ing, with the'wire websor'centers in ilace thereon. Fig. 2, is a fragmentary etail verticalsection of the same, showing a completed portion of a floor orlikehorizmtalv )art of a building. Fig. 3, is a detail side fiew of thewire web or center. Fig. 4, is a etail plan view of such wire centersecured ogether for ready shipment and handling. 4ig. 5, is an enlargedfra entary lan of Figs. 6, 7, 8, 9 an l0, are dliagram iews illustratingthe series of steps e1nloyed in erecting a reinforcing frame of hepresent type.

Similar numerals of reference indicate like arts in the several views. I

The general-form and arrangement of the einforcing frame parts, skeletonwire ceners and masses of concrete, set forth in my rior patent No.865,490 of September l0, 907, 1s employed in the present improveent, andcomprises a general arrangement f the 'parts as' follows 1 represents a'series of vertical cylindrical osts or columns, supported on the usualround footin and extending the height f the building, either as sin lepieces or a ries of. sections secured toge er end to end l y suitablecouplin s.

2 are a series o horizon@ cynndrieai Specicaton of Letters Patent,Application led December 10, 1907. Serial No. 405,888.

UNITED sTATEs PATENT oEEIoE.

G-EonGE M. GRAHAM, or CHICAGO, ILLINOIS, AssIGNon To s. A.EnWAnDaxoHLnn, or

ILLINOIS.

I BEINFORCING-FRAME FOR CONCRETE STRUCTURES.

Patented Nov. 2, 1909.

lation, and secured together and to the adjacent vertical posts- 1, bysuitable fittings, preferably of the type illustrated in my priorpatents Nos. 865,489 and 865,490 `of September 10, 1907. Four of suchgirders coupled together forms the border frame for a single unit of theskeleton reinforcing frame of a concrete structure and, as in my formerpatented construction, additional. units will utilizein their formation,a girder of the next adjacent unit or units, as illustrated in Fig. 1.

3 are diagonal brace members for each unit aforesald, and arranged atthe respective corners thereof as shown.

4 is the skeleton webbing or centering for `each unit aforesaid, andwhich as used in the present method consists of a multiplicity ofindependent wire links of the hoop type which.l encircle the cylindricalborder members of a building unit, in spaced relation, and in crossed oro posite directions, to afford an openweb lik which theconcrete massforming the main portion of the floor or other portion of the structureis'y attached, as usual. l Such links are initially foi-m'd as a bundlehaving the elongated hoop form shown in Fig. 3, with each individuallink of a uniform size and` form and secured together side by side as acompact bundle by twisted tie wires 6 near the respective ends of thebundle as shown in Figs. 4 and '5. As so arranged the in dividuallinks-,of the bundle will have a spaced relation to permit of aninterleaving structure.- Such construction andl arrangement of the linksformsthe subject matter lof .Letters Patent No. 910,470, dated January 5are sheets of perforated 'lathingnattached to the aforesaid webbingor`centeri`ng 4, of a unit, `and adapted to afford Agnisupportfor theconcrete mass, in the application and settin thereof. p

I the manufacture of said links an electric Weld 7 is preferred forimparting the required endless nature to said llnks during the processof makin the same of a uniform and standard size, ot er usuall andsuitable fastening means may howeverg be Vemployed without departingfrom.the"spirt of this irders arranged in the usual right-angle repartof the present invention. Y

The series of lvertical posts 1 are -first ofthe adjacent ends of twobundles together Iin the erection of the skeleton reinforcing e centerto'unite and to 4c, after which relation,

passed through and then coupled in place tioned bundle 4b c on and toits supporting posts as illustrated in Figs. 7 and 8. At this stage inerecting a building structure oftwo or more units in adjacent relation,the bundle of Wire links 4c of the next adjacent unit Will beinterleaved with the Wire links of the bundle 4, as illustrated in Figs.8, 9 and 10, previous to the next operations noW to be described. Thethird girder 2c is then slipped into the bundle of links 4b, and thefourth girder 2d through the interleaved links of the bundles 4 and saidgirders 2w and 2d are moved to place and coupled to their supportingposts, to finish the preliminary erection of the first unit. Thesucceeding units being erected by a repetition of the o erations aboveset forth. With the completion of such preliminary erection of one ormore units the links comprising` the center thereof are spread apartinto the required spaced relation shown in' Fig. 1, and the' required orpredetermined tensioning of the saine is effected by imparting in amanual and individual manner, morel or less obliqueness to the links inrelation to the marginal frame. The practical as Well as commercialmerit of the present improvement over what is: disclosed in my priorpatent No. 865,490 of September 10, 1907, consists in an avoidance ofthe costly and laborious operation of Winding the Wire, -constitutin theskeleton center, around the columns an girders after the same areerected, and so that the skeleton Wire centers can be made in anaccurate and economical manner at a properly equipped factory, thencetransported `to the place of use, applied, and properly spacedupon theskeleton frame as the erection progresses.

A. marked advantage of the present method consists in maintainin .theseries of links togetheras a bundle unti the last step of moving theminto spaced relation is performed in the completion of the skeletonframe. v

Having thus fully described my said invention what I claim as new anddesire to secure by" Letters Patent, is 1. The hereindescribed method oferecting reinforcing frames for concrete structures Which consists, ininitially *assembling as a compact bundle having an elongated form theseries of Wire links constituting the skeleton center of a buildingunit, successively inserting cylindrical frame members through saidbundle, coupling said members together as a border frame, and finallyseparating the individual links to forma skeleton center for said borderframe and to impose at the same time the required tension on the links.-

2. The herein described method of erecting reinforcingl frames forconcrete structures Which consists, in initially assemblin as compactbundles having an elongated form the series of wire links constitutingthe skeleton center of a building unit, arranging pairs of said bundlesin crossed relation, successively inserting cylindrical frame membersthrough said bundles, cou ling said members together as a border ame,and finally separating the individual links to form a skeleton centerfor said border frame and to impose at the same time the requiredtension on the links.

3. The herein described method of erecting reinforcing frames forconcrete structures which consists, in initially assemblin as a compactbundle having an elongate form the series of Wire links constituting theskeleton center of L1- buildin unit', successively inserting c lindrical'rame .members through said bun le, coupling said members ,together andto a series of vertical columns to constitute a border frame, andfinally separating the individual links to forni a skeleton centerfor-said border frame and to impose at the same time therequired tensionon. the links.

4. The herein described-method of erecting reinforcing frames forconcrete structures which consists, in initially assemblin as compactbundlesl having an elongat form the series of Wire links constitutingthe skeleton center of a building unit, arranging pairs of said bundlesin crossed relation,`suc cessively inserting cylindrical frame inembersthrough said bundles, coupling said members together and to a series ofvertical columns to constitute. a border-frame, and finally separatingthe individual links to form a skeleton center for said border frame andto impose at the same time the required tension on the links.

Si ed at-Chicago, of ovember, 1907.

Illinois,v this 29th day Witnesses:

ROBERT BURNS, HENRY MOE.

